Hand-brake for cars.



.I. F. OCONNOR.

HAND BRAKE FOR CARS. APPLICATION FILED JAN. 8. 1913.,

I Patented Apr. 15, 1919.

INVENTOR. da/m f Ufa/700x" BY 40 also provided With UNITED, STATES PATENT OFFICE.

' JOHN F. o'oomvon, or cmcaeo, ILLINOIS, AssIeNon 'ro WILLIAM H. MINER, or CHAZY,. I NEW YORK.

To all whom it may concern t known that 1, JOHN F. OConNon, a citizen of the United States, residing at Chicago, in the county of- Cook and State of Illinois, have invented a certain new and useful Improvement in Hand-Brakes for Cars, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying draw1ngs,forming a part of this specification.

This invention relates tojiinproveme'nts in liand brakes for cars. v

The object of the invention'is to provlde a relatively simple and compact hand-open.

ated brake. for railwaycars, having anincreased or, multiplied leverage as compared with those types of hand bra es now com;-

monly used, whereby a greater braking power is obtained for more effectively controlling movements of the cars.

In the drawing forming art of this specification, Figure 1 is a 51 e elevation of a hand brake embodying my improvements. Fig. 2 is a vertical, sectional view, taken 2 substantially on the line 2-2 of Fig. 1. Fig. 3 is another sectional view, taken substantially. 'on'the line 3-3 of Fig. 2. And Fig.

4 is a horizontal, sectional view, taken substantially on the line H of Fig. 1.

In said drawing, cluding a substantially cylindrical hollow housing casing or casting 10 having a plurality of extended ears 11--1l by which 1t is adapted to be riveted or the car. Said casting 10 is provided with an inner wall 12 and an intermediate wall 13. The wall 12 is provided with a'bearing.

14: for the inner journal 15 of a chain winding drum 16. The intermediate wall 13 is a somewhat larger bearing 17 for a corresponding journal portion 1 8 of said drum 16. I To the outer side of the wall 13, the drum l6 isprovided with a disk-like section 19 having a peripheral flange 20, the latter having integrally formed on itsinterior an internal gear also provided with a hollow shaft or axle section 22 on which is 'rotatably mounted a pinion 23. 'Aiso mounted on said axle section- 221s an oscillatably supported link 21,

d manner.

"to the bottom of which is pivotally connecte y as at 25, an operatin ing lever normally angs in the depending 5% position shown in Figs. 1 and 3 under the in- Specification of Letters Patent. Applic'ation filed January 8, 1918. Serial No. 210,884.

extension 28' for guiding purposes and also cover to some. extent the recess or openinner face of the 7 formed integrally with the brake is shown as inbolted to a wall of 21. The winding drum 16 1sv lever 26. The operat- HAND-BRAKE mt cans- Patented Apr. 15, 1919.

fluence of gravity,

and when in such posig tion, the pawl 27 thereof is disengaged from the pinion 23. The lever ing 29 formed in the casting 10 to permit the'movements' of the oscillating operating lever 26. I

Secured to the casting 10 at its outer'end is a cover plate 30'suitably flanged around its periphery, in the casting 10, said plate being held in 26 has also an as indicated at 31, to fit withoperative pos1t1on by means of a bolt 32.

its interior, said plate 30 is provided witli a stud bearing 33 on which is rotatably mounted a pinion 34 that meshes with both the pinion 23 and the internal gear 21.

A gravity controlled locking dog 35 is pivotally-mounted on a suitable stud 36 on the plate 30, the locking dog engaging the pinion 23 to hold the chain in its tightened or wound condition. The chain is of course, released by merely swinging thedog upwardly, as will be understood.

1 he casting 10 is also suitably cut away at the bottom, as indicated at 37 ,to accommodate the brake chain 38', the upper link'39 of the latter being caught over a hook 40 the drum 16, the hook, 40 being so arranged that when the link 39 is in place and the bolt 32 applied, said link 3-9 cannot clear from an inspection of Fig. 2.

With the arrangement above described, it

is evident that the chain-can be tightened step by step with a .pawl and ratchet efiect by merely oscillating the lever handle 26. By interposing the pinions 23 and 34: .between the operating lever and the internal gear 21, I am enabled to increase the leverage applied by the operator to any desired extent within reasonable limits, the leverage ratio .increase shown in the drawing being substantially 3 :1.. The release of the chain can be efle'cted by disengaging the-l cking dog as here' be" noted that by arranging; the gearing mechanism in the manner shown and e} scribed, the entire device is made very comact and all the parts are well protected rom the weather and injury in any other I claim: 1. In a hand brake adapted for railway cars and the like, the combination with a be removed, as will be nbefore described. It willalso Q housing of substantially cylindrical form having an outer end wall and an intermedL, ate artition, of a chain winding drum rotata ly mounted Within said casing and adapted to receive the chain thereon in'the space between said intermediate partition and the inner endof the casing, a gear wheel movable in unison with said drum, an oscillatable pawl lever, a ratchet pinion with which said pawl lever is adapted to cooperate, a pinion interposed between said ratchet pinion and said gear, and means for looking said 'drum'against accidental reverse r0ta-' tion, said gear wheel, 'pawl lever, ratchet pinion and pinion being all disposed within the casing in the space provided between said outer end wall and intermediate partition.

2. In a brake adapted for attachment to railway cars and the like, the combination with a casing adaptedto besecured to a, car wall, said casing being divided into one relatively small chamber and. another relatively large chamber of a chain winding drum rotatably mounted within said casing and adaptedvto have the chainwound thereon within thev larger chamber, an operating hanhave hereunto subscribed my name I this 29th 

